1.1.5

Finding 100 More or Less than a Number

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Finding 100 More or Less than a Number

When we add or take away 100 from a number, we need to focus on the hundreds column.

Find 100 more

Find 100 more

To add 100, we add 1 to the number in the hundreds column:
- 370 + 100 = 470

Find 100 less

Find 100 less

To take away 100, we subtract 1 from the number in the hundreds column:
- 370 - 100 = 270

Add 1 to 9

Add 1 to 9

Sometimes we want to add 100 and the number in the hundreds column is 9.
To do this, change the 9 to a 0 and add 1 to the number in the thousands column:
- 4980 + 100 = 5080

Take away 1 from 0

Take away 1 from 0

Sometimes we want to take away 100 and the number in the hundreds column is 0.
To do this, change the 0 to a 9 and take away 1 from the number in the thousands column:
- 1056 - 100 = 0956 = 956

1

Year 3 - Number

2

Year 3 - Measurement

2.1

Length

2.1.1Length 2.1.2Comparing Lengths 2.1.3Add & Subtract Lengths 2.1.4Perimeter

2.2

Mass

2.2.1Mass 2.2.2Comparing Masses 2.2.3Add & Subtract Masses

2.3

Volume & Capacity

2.3.1Volume & Capacity 2.3.2Comparing Volumes 2.3.3Add & Subtract Volumes

2.4

Money

2.4.1Money 2.4.2Counting Money 2.4.3Adding & Subtracting Money

2.5

Time

2.5.1Units of Time 2.5.2Clocks 2.5.3Telling the Time 2.5.4Time of the Day 2.5.512-Hour & 24-Hour Clocks 2.5.6Measuring Time

3

Year 3 - Geometry

3.1

Angles

3.1.1Angles in Degrees 3.1.2Types of Angle

3.2

Properties of Shapes

3.2.12D Shapes 3.2.23D Shapes

3.3

Straight Lines

3.3.1Straight Lines 3.3.2Parallel & Perpendicular Lines

4

Year 3 - Statistics

4.1

Statistics

4.1.1Statistics 4.1.2Pictograms & Bar Charts

5

Year 4 - Number

6

Year 4 - Measurement

6.1

Units

6.1.1Metric Measurements 6.1.2Adding & Subtracting Money

6.2

Time

6.2.1Converting Units of Time 6.2.2Changing the 12-Hour Clock to the 24-Hour Clock 6.2.3Changing the 24-hour Clock to the 12-Hour Clock

7

Year 4 - Geometry

7.1

Properties of Shapes

7.1.1Symmetry 7.1.2Types of Triangle 7.1.3Quadrilaterals

7.2

Perimeter & Area

7.2.1Perimeter 7.2.2Area

7.3

Position & Direction

7.3.1Coordinates 7.3.2Translation

8

Year 4 - Statistics

8.1

Statistics

8.1.1Types of Data 8.1.2Pictograms & Bar Charts 8.1.3Line Graphs

Jump to other topics

1

Year 3 - Number

2

Year 3 - Measurement

2.1

Length

2.1.1Length 2.1.2Comparing Lengths 2.1.3Add & Subtract Lengths 2.1.4Perimeter

2.2

Mass

2.2.1Mass 2.2.2Comparing Masses 2.2.3Add & Subtract Masses

2.3

Volume & Capacity

2.3.1Volume & Capacity 2.3.2Comparing Volumes 2.3.3Add & Subtract Volumes

2.4

Money

2.4.1Money 2.4.2Counting Money 2.4.3Adding & Subtracting Money

2.5

Time

2.5.1Units of Time 2.5.2Clocks 2.5.3Telling the Time 2.5.4Time of the Day 2.5.512-Hour & 24-Hour Clocks 2.5.6Measuring Time

3

Year 3 - Geometry

3.1

Angles

3.1.1Angles in Degrees 3.1.2Types of Angle

3.2

Properties of Shapes

3.2.12D Shapes 3.2.23D Shapes

3.3

Straight Lines

3.3.1Straight Lines 3.3.2Parallel & Perpendicular Lines

4

Year 3 - Statistics

4.1

Statistics

4.1.1Statistics 4.1.2Pictograms & Bar Charts

5

Year 4 - Number

6

Year 4 - Measurement

6.1

Units

6.1.1Metric Measurements 6.1.2Adding & Subtracting Money

6.2

Time

6.2.1Converting Units of Time 6.2.2Changing the 12-Hour Clock to the 24-Hour Clock 6.2.3Changing the 24-hour Clock to the 12-Hour Clock

7

Year 4 - Geometry

7.1

Properties of Shapes

7.1.1Symmetry 7.1.2Types of Triangle 7.1.3Quadrilaterals

7.2

Perimeter & Area

7.2.1Perimeter 7.2.2Area

7.3

Position & Direction

7.3.1Coordinates 7.3.2Translation

8

Year 4 - Statistics

8.1

Statistics

8.1.1Types of Data 8.1.2Pictograms & Bar Charts 8.1.3Line Graphs

Practice questions on Finding 100 More or Less than a Number

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1
What is 100 more than 822?Multiple choice
2
What is 100 less than 559?Multiple choice
3
A furniture shop wants to reduce the price of a sofa by £100. If the sofa cost £399 before, what is its new price?Multiple choice

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Finding 10 More or Less than a Number

Ordering & Comparing Numbers up to 1,000